WO2021114355A1 - Dispositif d'affichage à cristaux liquides - Google Patents

Dispositif d'affichage à cristaux liquides Download PDF

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Publication number
WO2021114355A1
WO2021114355A1 PCT/CN2019/126657 CN2019126657W WO2021114355A1 WO 2021114355 A1 WO2021114355 A1 WO 2021114355A1 CN 2019126657 W CN2019126657 W CN 2019126657W WO 2021114355 A1 WO2021114355 A1 WO 2021114355A1
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WO
WIPO (PCT)
Prior art keywords
sub
pixels
liquid crystal
display device
gate
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Application number
PCT/CN2019/126657
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English (en)
Chinese (zh)
Inventor
陈江川
Original Assignee
深圳市华星光电半导体显示技术有限公司
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Application filed by 深圳市华星光电半导体显示技术有限公司 filed Critical 深圳市华星光电半导体显示技术有限公司
Priority to US16/627,308 priority Critical patent/US20210325747A1/en
Publication of WO2021114355A1 publication Critical patent/WO2021114355A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136222—Colour filters incorporated in the active matrix substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits

Definitions

  • the present disclosure relates to a liquid crystal display device, in particular to a liquid crystal display device used in a dual-gate driving mode.
  • TFT thin film transistor
  • the distribution and connection of the data lines and the gate lines is one sub-pixel with one gate line 160.
  • Another type of dual gate drive is to double the gate line to halve the data line.
  • adjacent TFTs that is, adjacent sub-pixels
  • the source electrodes of the adjacent sub-pixels are connected to the same data line, but the gates of adjacent sub-pixels are respectively connected to different gate lines, and the TFT opening directions of the adjacent sub-pixels are different.
  • the TFT opening direction is different.
  • the overlapping area of the source/drain of the TFT of adjacent sub-pixels relative to the active layer is inconsistent, resulting in the gates of adjacent sub-pixels.
  • the capacitance (Cgs) between the electrode and the source is inconsistent, and the difference in the feedthrough voltage causes problems such as uneven display and display difference.
  • the light transmittance of the left and right adjacent pixels will be visible to the human eye. For example, in car displays, this problem will be so serious that vertical stripes can be seen.
  • a compensation circuit is often used to compensate the gate-source capacitance (Cgs).
  • the sources of the TFTs of adjacent sub-pixels are connected to the same data line, but the gates of adjacent sub-pixels are connected to different gate lines to form the TFTs of adjacent sub-pixels.
  • the opening direction is different.
  • the overlapping area of the source/drain of the TFT of adjacent sub-pixels relative to the active layer is inconsistent, resulting in inconsistent gate-source capacitance (Cgs) of adjacent sub-pixels, resulting in feedthrough voltage Differences cause problems such as uneven display and display differences.
  • Cgs gate-source capacitance
  • the main purpose of this application is to use a thin film transistor (TFT) substrate structure for a dual gate drive circuit without gate-source capacitance (Cgs) compensation.
  • TFT thin film transistor
  • this application proposes a liquid crystal display device, in which the overlapping area of the source/drain of the thin film transistors of adjacent sub-pixels with respect to the active layer is the same, so that the overlapping areas of adjacent sub-pixels
  • the gate-source capacitance (Cgs) is the same, so it can avoid the display unevenness and display difference caused by the difference in the feedthrough voltage caused by the inconsistency of the gate-source capacitance (Cgs).
  • the liquid crystal display device proposed in the present application includes a plurality of scan lines, a plurality of data lines mutually perpendicular to the plurality of scan lines, and a plurality of sub-pixels defined by the plurality of scan lines and the plurality of data lines,
  • Each of the sub-pixels includes a thin film transistor, the thin film transistor includes a gate, a source, and a drain.
  • the gate is correspondingly connected to one of the plurality of scan lines, and each data line corresponds to each
  • the thin film transistor includes two extensions, the two extensions are used to form two branches of the source, one end of the drain faces the opening formed by the two branches, and each sub The openings of the pixels face the same direction.
  • the sub-pixels in the same column are connected to the same data line.
  • the liquid crystal display device further includes a data driving chip disposed in a non-display area, and a sector area connected between the data driving chip and the plurality of data lines, and A plurality of wiring lines are connected to the data driving chip, and every two data lines are correspondingly connected to one of the plurality of wiring lines in the sector area.
  • the adjacent sub-pixels are connected to different scan lines.
  • it further includes a gate driving chip disposed in a non-display area, and a gate driving sector connected between the gate driving chip and the plurality of scan lines, the gate driving A plurality of traces of the sector area are connected to the gate driving chip, and each of the scan lines is correspondingly connected to one of the plurality of traces of the gate drive sector.
  • the two extensions of the data line have a symmetric structure based on a symmetry axis, and the symmetry axis is parallel to the scan line.
  • the thin film transistor further includes a gate insulating layer, an active layer is laminated on the gate, and a flat layer covers the active layer, the source and the drain, and the upper The electrode is disposed above the flat layer, the sub-pixel further includes a lower electrode, and a part of the drain is electrically connected to the lower electrode.
  • the upper electrode is strip-shaped and is arranged corresponding to the lower electrode to form a fringe field switching electrode structure.
  • the liquid crystal display device further includes a color filter substrate, a liquid crystal layer, and a first alignment film located between the upper electrode and the liquid crystal layer.
  • the plurality of sub-pixels include red sub-pixels, green sub-pixels, and blue sub-pixels, or the plurality of sub-pixels include red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels.
  • the present application further provides a liquid crystal display device, including a plurality of scan lines, a plurality of data lines perpendicular to the plurality of scan lines, and a plurality of sub-lines defined by the plurality of scan lines and the plurality of data lines.
  • a pixel, each of the sub-pixels includes a thin film transistor, the thin film transistor includes a gate, a source, and a drain, the gate is correspondingly connected to one of the plurality of scan lines, and each of the data lines corresponds to
  • Each of the thin film transistors includes two extensions. The two extensions are used to form two branches of the source. One end of the drain faces the opening formed by the two branches.
  • the openings of the sub-pixels face the same direction, and further include a data driving chip arranged in a non-display area, and a sector area connected between the data driving chip and the plurality of data lines, and A plurality of wiring lines in the sector area are connected to the data driving chip, and every two data lines are correspondingly connected to one of the plurality of wiring lines in the sector area.
  • the sub-pixels in the same column are connected to the same data line.
  • the adjacent sub-pixels are connected to different scan lines.
  • it further includes a gate driving chip disposed in a non-display area, and a gate driving sector connected between the gate driving chip and the plurality of scan lines, the gate driving A plurality of traces of the sector area are connected to the gate driving chip, and each of the scan lines is correspondingly connected to one of the plurality of traces of the gate drive sector.
  • the two extensions of the data line have a symmetric structure based on a symmetry axis, and the symmetry axis is parallel to the scan line.
  • the thin film transistor further includes a gate insulating layer, an active layer is laminated on the gate, and a flat layer covers the active layer, the source and the drain, and the upper The electrode is disposed above the flat layer, the sub-pixel further includes a lower electrode, and a part of the drain is electrically connected to the lower electrode.
  • the upper electrode is strip-shaped and is arranged corresponding to the lower electrode to form a fringe field switching electrode structure.
  • it further includes a color filter substrate, a liquid crystal layer, and a first alignment film located between the upper electrode and the liquid crystal layer.
  • the plurality of sub-pixels include red sub-pixels, green sub-pixels, and blue sub-pixels, or the plurality of sub-pixels include red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels.
  • the present application further provides a liquid crystal display device, including a plurality of scan lines, a plurality of data lines perpendicular to the plurality of scan lines, and a plurality of sub-lines defined by the plurality of scan lines and the plurality of data lines.
  • a pixel, each of the sub-pixels includes a thin film transistor, the thin film transistor includes a gate, a source, and a drain, the gate is correspondingly connected to one of the plurality of scan lines, and each of the data lines corresponds to
  • Each of the thin film transistors includes two extensions. The two extensions are used to form two branches of the source. One end of the drain faces the opening formed by the two branches.
  • the openings of the sub-pixels face the same direction; wherein, it further includes a data driving chip arranged in a non-display area, and a sector area connected between the data driving chip and the plurality of data lines, the A plurality of traces of the sector area are connected to the data driving chip, and every two of the data lines are correspondingly connected to one of the plurality of traces of the sector area; and, a gate disposed in the non-display area A driving chip, and a gate driving sector connected between the gate driving chip and the plurality of scan lines, and a plurality of traces of the gate driving sector are connected to the gate driving chip, Each of the scan lines is correspondingly connected to one of a plurality of wiring lines of the gate driving sector.
  • This application proposes a liquid crystal display device.
  • adjacent sub-pixels are connected to different scan lines, so that the left and right sub-pixels can be controlled separately, and the data
  • the line is input to the display area, it is divided into two, adjacent sub-pixels (Thin film transistor, TFT) opening direction can be made consistent, effectively avoiding the difference in the gate-source capacitance (Cgs) caused by the inconsistency of the overlapping area of the source/drain of the adjacent sub-pixel TFT with respect to the active layer, which will lead to the difference in the capacitance between the gate and the source.
  • Realistic vertical streaks caused by sub-pixel feedthrough differences, or other image quality issues improve the display image quality.
  • FIG. 1 is a schematic diagram of a dual gate driving circuit of a liquid crystal display device according to an embodiment of the present invention.
  • Fig. 2 is a schematic cross-sectional view taken along the line A-A' in Fig. 1.
  • This application proposes a liquid crystal display device.
  • adjacent sub-pixels are connected to different scan lines, so that the left and right sub-pixels can be controlled separately, and the data
  • the line is input to the display area, it is divided into two, adjacent sub-pixels (Thin film transistor, TFT) opening direction can be made consistent, effectively avoiding the difference in the gate-source capacitance (Cgs) caused by the inconsistency of the overlapping area of the source/drain of the adjacent sub-pixel TFT with respect to the active layer, which will lead to the difference in the capacitance between the gate and the source (Cgs).
  • Realistic vertical streaks caused by sub-pixel feedthrough differences, or other image quality issues improve the display image quality. Specific embodiments are described as follows.
  • FIG. 1 is a schematic diagram of a dual gate driving circuit according to an embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional view taken along the line A-A' in FIG.
  • the liquid crystal display device includes a data driving chip arranged in a non-display area, and a fanout connected between the data driving chip and a plurality of data lines. A plurality of wirings in the fanout area are connected to the data driving chip. The two data lines are correspondingly connected to one of the multiple traces of the sector area.
  • the sector area of the driver chip (IC) maintains a dual gate structure and the number of data lines is halved, but the data lines are in the input display area.
  • the time is divided into two. For example, as shown in FIG. 1, the data line 510 is divided into a data line 511 and a data line 512 when input to the display area, and the data line 520 is divided into a data line 521 and a data line 522.
  • the liquid crystal display device proposed in the present application includes a plurality of scan lines 600, a plurality of data lines 511, 512, 521, 522 perpendicular to the plurality of scan lines, and a plurality of sub-lines defined by the plurality of scan lines and the plurality of data lines.
  • Pixels 201, 202, 203, and 204, each sub-pixel includes a thin film transistor (Thin film transistor, TFT) 211, 221, 231, 241.
  • the TFT includes a gate electrode 20, a gate insulating layer 30, an active layer 40, a source electrode 50 and a drain electrode 60, and a flat layer 70, which are sequentially stacked on the substrate 10.
  • the electrode 20 is correspondingly connected to one of the multiple scan lines 600, and each data line includes two extensions 501, 502 corresponding to each TFT to form two branches of the source electrode 50, and one end of the drain electrode 60 faces the two sides of the source electrode 50.
  • the openings formed by the branches 501 and 502 face the same direction.
  • the sub-pixel 201, the sub-pixel 202, and the sub-pixel 203 form a pixel unit, which respectively correspond to the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the color filter, and the sub-pixel 204 corresponds to To the red sub-pixel in the adjacent pixel unit.
  • Adjacent sub-pixels are connected to different scan lines, the TFT 211 of the sub-pixel 201 is connected to the data line 511, and the TFT 221 of the sub-pixel 202 is connected to the data line 512.
  • the data line 520 is divided into a data line 521 and a data line 522 when input to the display area.
  • the TFT 231 of the sub-pixel 203 is connected to the data line 521, and the TFT 241 of the sub-pixel 204 is connected to the data line 522.
  • the left and right data lines 510 and 520 respectively control the adjacent sub-pixels 201, 202 and 203, 204 respectively.
  • all the sub-pixels in the same line are connected to the same data line 511, 521, that is, the two branches 501, 502 of each TFT of all the sub-pixels in the same line are located on the same side of the same data line.
  • the source/drain of each TFT is relative to The overlapping area of the active layer, even if there is an error caused by the process alignment, the gate-source capacitance (Cgs) of each TFT will remain the same because of the same error, so the solution of the present invention does not need Cgs compensation .
  • the Cgs is based on design requirements, and the two extensions 501 and 502 of the data line have a symmetrical structure based on the symmetry axis, which is parallel to the scan line.
  • the liquid crystal display device further includes a gate driving chip disposed in the non-display area, and a gate driving sector connected between the gate driving chip and a plurality of scan lines.
  • the lines are connected to the gate driving chip, and each scan line is correspondingly connected to one of the multiple wiring lines in the gate driving sector.
  • the liquid crystal display device further includes an upper electrode disposed above the flat layer 70, each sub-pixel further includes a lower electrode 81, and a part of the drain 60 is electrically connected to the lower electrode 81.
  • the upper electrode 82 is strip-shaped, it is arranged corresponding to the lower electrode 81 to form a fringe field switching (FFS) electrode structure.
  • FFS fringe field switching
  • the liquid crystal display device may further include a color filter substrate 300, a liquid crystal layer 400, and a first alignment film 90 located between the upper electrode and the liquid crystal layer.
  • the color filter substrate 300 at least includes a substrate 301, color photoresists 303, 304, a black matrix 302 located between different color photoresists, and a second alignment film 310 located between the color photoresist and the liquid crystal layer.
  • the multiple sub-pixels defined by multiple scan lines and multiple data lines can be designed to include red sub-pixels, green sub-pixels, and blue sub-pixels, or multiple sub-pixels corresponding to different color photoresists on the color filter substrate 300.
  • the pixels include red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels.
  • the transmittance design value can be adjusted to the left and right, but because of the process deviation, when the black matrix (BM) has a certain alignment deviation, adjust it to It is difficult to have no misalignment at all.
  • the TFT of all sub-pixels can be The source has symmetry in the X direction, that is, the two extensions connected to the data line have a symmetrical structure with the symmetry axis parallel to the scan line. Therefore, the solution of the present invention does not require Cgs compensation. Moreover, it is convenient to design and manufacture. The difference in the transmittance of the left and right sub-pixels can be smaller than what is visible to the human eye.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Power Engineering (AREA)
  • Liquid Crystal (AREA)
  • Computer Hardware Design (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Geometry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un dispositif d'affichage à cristaux liquides. La zone de chevauchement d'électrodes source (50)/d'électrodes drain (60) de transistors à couches minces (211, 221, 231, 241) de sous-pixels adjacents (201, 202, 203, 204) par rapport à une couche active (40) est cohérente, de telle sorte que la capacité d'électrode grille/source (Cgs) des sous-pixels adjacents (201, 202, 203, 204) est cohérente, les problèmes d'affichage irrégulier, différence d'affichage et analogue provoqués par une différence de tension de passage due à une capacité d'électrode grille/source incohérente peut être évitée, et la qualité d'image d'un produit à double grille est améliorée.
PCT/CN2019/126657 2019-12-12 2019-12-19 Dispositif d'affichage à cristaux liquides WO2021114355A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/627,308 US20210325747A1 (en) 2019-12-12 2019-12-19 Liquid crystal display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911271993.5A CN111025804A (zh) 2019-12-12 2019-12-12 液晶显示装置
CN201911271993.5 2019-12-12

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CN112433413B (zh) * 2020-11-26 2022-07-12 深圳市华星光电半导体显示技术有限公司 液晶显示器及其串扰消除方法

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